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TL001: Litterfall rates in Reference Stand within the Andrews Experimental Forest, 1977-1985

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Status: annually
Period: 1977-06-01 to 1985-01-11
Version: 6
Published: 2011-09-14
EDI Package ID: knb-lter-and.3186.6
Source XML: TL001_6.xml

Notice

"As Is" Basis: All content, including maps and forecasts, is provided without warranties. Users are advised to independently verify critical information.

Citation

Harmon, M.; McKee, W. 2011. Litterfall rates in Reference Stand within the Andrews Experimental Forest, 1977-1985 Long-Term Ecological Research Andrews Forest LTER Site. [Database]. Available: https://andrewsforest-stage.forestry.oregonstate.edu/data/fsdb-data-catalog/TL001 Accessed 2026-05-10.

Abstract

Seasonal and annual rates of litterfall have been sampled at 6 permanent plots picked to represent a range of habitats and elevations. To assess variation in litterfall and decomposition and its role in nutrient cycling across an environmental gradient of moisture and temperature. This study is to be incorporated with others in the western and northern US to study the relationship of climate and vegetation on litterfall rates and decomposition.

Coverage

Temporal coverage: 1977-06-01 to 1985-01-11

Geographic coverage: Selected Reference Stands in the Andrews Experimental Forest

Spatial coverage:

Bounds: W -122.25882057, E -122.09452900, N 44.34400000, S 44.20177046

Purpose

No purpose entries listed in this EML file.

Project

Title: Long-Term Ecological Research

Personnel
  • Sherri L. Johnson - Principal Investigator
    US Forest Service ;Pacific NW Research Station ;3200 SW Jefferson Way, Corvallis, OR, 97331, USA
    Phone: 541-758-7771
    Email: sherri.johnson2@usda.gov, sherri.johnson@oregonstate.edu
  • Julia A. Jones - Principal Investigator
    Oregon State University;Department of Geosciences; Wilkinson Hall 104, Corvallis, OR, 97331-5506, USA
    Phone: (541) 737-1224
    Email: Julia.Jones@oregonstate.edu, geojulia@comcast.net
    ORCID: http://orcid.org/0000-0001-9429-8925
  • Matthew G Betts - Principal Investigator
    Department of Forest Ecosystems and Society; 201E Richardson Hall; College of Forestry; Oregon State University, Corvallis, OR, 97331
    Phone: (541) 737-3841
    Email: matt.betts@oregonstate.edu
  • Michael P. Nelson - Principal Investigator
    Department of Forest Ecosystems and Society; 201K Richarson Hall; College of Forestry; Oregon State University, Corvallis, OR, 97331
    Phone: 541-737-9221
    Email: mpnelson@oregonstate.edu
    ORCID: http://orcid.org/0000-0001-6917-4752
  • David Bell - Principal Investigator
    Email: david.bell@usda.gov, david.bell@oregonstate.edu
Abstract
  • The H.J. Andrews Experimental Forest is a living laboratory that provides unparalleled opportunities for the study of forest and stream ecosystems in the central Cascade Range of Oregon. Since 1980, as a part of the National Science Foundation Long Term Ecological Research (NSF-LTER) program, the Andrews Experimental Forest has become a leader in the analysis of forest and stream ecosystem dynamics.
  • Long-term field experiments and measurement programs have focused on climate dynamics, streamflow, water quality, and vegetation succession. Currently researchers are working to develop concepts and tools needed to predict effects of natural disturbance, land use, and climate change on ecosystem structure, function, and species composition.
  • The Andrews Experimental Forest is administered cooperatively by the USDA Forest Service Pacific Northwest Research Station, Oregon State University and the Willamette National Forest. Funding for the research program comes from the National Science Foundation (NSF), US Forest Service Pacific Northwest Research Station, Oregon State University, and other sources.
Funding

Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University. National Science Foundation: DEB1440409

Study Area Description
  • Long-Term Ecological Research
    The Andrews Forest is situated in the western Cascade Range of Oregon, and covers the entire 15,800-acre (6400-ha) drainage basin of Lookout Creek. Elevation ranges from 1350 to 5340 feet (410 to 1630 m). Broadly representative of the rugged mountainous landscape of the Pacific Northwest, the Andrews Forest contains excellent examples of the region's conifer forests and associated wildlife and stream ecosystems. These forests are among the tallest and most productive in the world, with tree heights of often greater than 250 ft (75 m). Streams are steep, cold and clean, providing habitat for numerous aquatic organisms.
Associated Party
  • Mark E. Harmon
    Role: Principal Investigator
    Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
    Phone: (541) 737-8455, (978) 724-0045 ext 223
    Email: mark.harmon@oregonstate.edu
  • Mark E. Harmon
    Role: Creator
    Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
    Phone: (541) 737-8455, (978) 724-0045 ext 223
    Email: mark.harmon@oregonstate.edu
  • W. Arthur McKee
    Role: Creator
    Flathead Lake Biological Station ;The University of Montana ;300 Bio Station Lane, Polson, MT, 59860-9659, USA
    Phone: 406-982-3301
    Email: Art.McKee@umontana.edu
Contact
  • Information Manager
    Andrews Forest LTER Program, US Forest Service Pacific Northwest Research Station, 3200 SW Jefferson Way, Corvallis, OR, 97331
    Email: hjaweb@fsl.orst.edu
  • W. Arthur McKee
    Flathead Lake Biological Station ;The University of Montana ;300 Bio Station Lane, Polson, MT, 59860-9659, USA
    Phone: 406-982-3301
    Email: Art.McKee@umontana.edu
Publisher
  • Andrews Forest LTER Site
    Role: Publisher
    Forest Ecosystems and Society Department in Forestry, Oregon State University, 201K Richardson Hall, Corvallis, OR, 97331-5752
    Phone: (541) 737-8480
    Email: lterweb@fsl.orst.edu
Study Description

Seasonal and annual rates of litterfall have been sampled at 6 permanent plots picked to represent a range of habitats and elevations. To assess variation in litterfall and decomposition and its role in nutrient cycling across an environmental gradient of moisture and temperature. This study is to be incorporated with others in the western and northern US to study the relationship of climate and vegetation on litterfall rates and decomposition. Field Methods - TL001

Methods

Method Steps

Field Methods - TL001
  • From 1976 to 1990 fine litter was collected in 6 traps (1*1 m) at each site at 3 to 4 week intervals unless buried by snow. Since 1990 litter has been collected in 6 traps 29 cm in diameter (0.066 m).
  • 6 traps randomly located on a diagonal grid across the 50m x 50m square plots. Litter collected every 3-6 weeks except in the winter at the highest elevation sites. Standing litter biomass estimated in 10-.1 m sq plots. RS13, RS14 are young growth forests; the rest are old-growth. Litter traps made of 2 x 4 inch wood frames 1 sq meter in area with nylon mosquito netting and support wire. Material oven dried at 70 deg C for at least 24 hr. Litter separated and weighed to nearest 0.01 g. 14 categories for sorting. From June 1978 on,"unattached needle weights.

Sampling

Software

No software entries listed in this EML file.

Keywords
  • LTER controlled vocabulary: primary productivity (theme), leaf area (theme), reference stands (theme), permanent plots (theme), litterfall (theme), primary production (theme), inorganic nutrients (theme), organic matter (theme)
  • Andrews Experimental Forest site thesaurus: Long-Term Ecological Research (LTER) (theme)
  • LTER core research areas: primary production (theme), inorganic nutrients (theme), organic matter (theme)
Taxonomic Hierarchy

No taxonomic hierarchy listed in this EML file.

Data Entities
# Entity Metadata Data
1 TL00101
TL00101
Litter fall, all sites 770606 - 810520:
METADATA DATA
Metadata
TL00101 - TL00101

Object name: TL00101.csv

Records: 2299

Attributes: 21

File size: 223160 byte

Checksum (MD5): ae72a8a8ba79954e4772c41a0d0c6c76

Format: headers=1, recordDelimiter=\r\n, fieldDelimiter=,, quoteCharacter=", orientation=column

Constraints (2)
  • primaryKey: PRIMARY
    TL00101.DAY, TL00101.MONTH, TL00101.STAND, TL00101.TRAP, TL00101.YEAR
  • notNullConstraint: NOTNULL
    TL00101.DATACODE, TL00101.DAY, TL00101.MONTH, TL00101.STAND, TL00101.TRAP, TL00101.YEAR
Attributes (21)
DATACODE - char(4) (nominal)

ID: TL00101.DATACODE

Data set code

Type system: Microsoft SQL Server 2008

STAND - char(4) (nominal)

ID: TL00101.STAND

Alpha code for reference stand

Type system: Microsoft SQL Server 2008

Code definitions (10)
  • RS01
    Reference Stand RS01, H.J. Andrews EF, Willamette NF
  • RS02
    Reference Stand RS02, H.J. Andrews EF, Willamette NF
  • RS03
    Reference Stand RS03, H.J. Andrews EF, Willamette NF
  • RS04
    Reference Stand RS04, H.J. Andrews EF, Willamette NF
  • RS07
    Reference Stand RS07, H.J. Andrews EF, Willamette NF
  • RS13
    Reference Stand RS13, Wildcat Mtn RNA, Willamette NF
  • RS14
    Reference Stand RS14, Wildcat Mtn RNA, Willamette NF
  • RS26
    Reference Stand RS26, H.J. Andrews EF, Willamette NF
  • MIRK
    Andrews Mirkwood site
  • MW01
    Old Andrews Mirkwood site
YEAR - numeric(4,0) (dateTime)

ID: TL00101.YEAR

Year of trap sample

Type system: Microsoft SQL Server 2008

Date format: YYYY

MONTH - numeric(2,0) (dateTime)

ID: TL00101.MONTH

Month of trap sample

Type system: Microsoft SQL Server 2008

Date format: month

DAY - numeric(2,0) (dateTime)

ID: TL00101.DAY

Day of trap sample

Type system: Microsoft SQL Server 2008

Date format: day

TRAP - numeric(1,0) (interval)

ID: TL00101.TRAP

Number of litterfall trap in the stand

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=1.0000 (exclusive=false), max=7.0000 (exclusive=false)

LCTWIGS - numeric(6,2) (ratio)

ID: TL00101.LCTWIGS

Live conifer twigs biomass

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)

LOTWIGS - numeric(6,2) (ratio)

ID: TL00101.LOTWIGS

Other live twig biomass leached of nutrients

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=5.0000 (exclusive=false)

DCTWIGS - numeric(6,2) (ratio)

ID: TL00101.DCTWIGS

Dead conifer twig biomass

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=250.0000 (exclusive=false)

DOTWIGS - numeric(6,2) (ratio)

ID: TL00101.DOTWIGS

Other dead twig biomass

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=180.0000 (exclusive=false)

BARK - numeric(6,2) (ratio)

ID: TL00101.BARK

Bark biomass or on the forest floor

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=180.0000 (exclusive=false)

NEEDLES - numeric(6,2) (ratio)

ID: TL00101.NEEDLES

Attached conifer needles

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)

UNATTACH - numeric(6,2) (ratio)

ID: TL00101.UNATTACH

Unattached conifer needle biomass

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)

ELEAVES - numeric(6,2) (ratio)

ID: TL00101.ELEAVES

Evergreen hardwood leaf biomass

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=10.0000 (exclusive=false)

DLEAVES - numeric(6,2) (ratio)

ID: TL00101.DLEAVES

Deciduous hardwood leaf biomass

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=50.0000 (exclusive=false)

CONES - numeric(6,2) (ratio)

ID: TL00101.CONES

Female cones and male parts biomass

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)

BGLICHN - numeric(6,2) (ratio)

ID: TL00101.BGLICHN

Blue-green lichen biomass

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=15.0000 (exclusive=false)

GRLICHN - numeric(6,2) (ratio)

ID: TL00101.GRLICHN

Green lichen biomass

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=50.0000 (exclusive=false)

MOSS - numeric(6,2) (ratio)

ID: TL00101.MOSS

Moss biomass

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=5.0000 (exclusive=false)

OTHER - numeric(6,2) (ratio)

ID: TL00101.OTHER

Unattached needles and budscales

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)

CEDAR - numeric(6,2) (ratio)

ID: TL00101.CEDAR

Western red cedar parts biomass leached of nutrients

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=70.0000 (exclusive=false)

Units
number number dimensionless number dimensionless 1 dimensionless number, i.e., ratio, count
grams g mass gram kilogram 0.001 grams; 0.001 kilogram
Intellectual Rights

Data Use Agreement:

The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. This Data Set is released under the Creative Commons license CC BY "Attribution" (see: https://creativecommons.org/licenses/by/4.0/). Creative Commons license CC BY - Attribution is a license that allows others to distribute, remix, tweak, and build upon your work (even commercially), as long as you are credited for the original creation. This license accommodates maximum dissemination and use of licensed materials.

It is considered professional conduct and an ethical obligation to acknowledge the work of other scientists. The Data User is asked to provide attribution of the original work if this data package is shared in whole or by individual parts or used in the derivation of other products. A recommended citation is provided for each Data Set in the Andrews LTER data catalog (see: http://andlter.forestry.oregonstate.edu/data/catalog/datacatalog.aspx). A generic citation is also provided for this Data Set on the website https://portal.edirepository.org in the summary metadata page. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.

While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed and all data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data.

General acknowledgement: Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University.

Licensed

License: N/A

Maintenance

Maintenance update frequency: annually

Description

  • An update history is logged and maintained with each new version of every dataset.

Change History

  • Version1 (1988-06-30)
    Original metadata creation.
  • Version2 (2002-04-30)
    Metadata restructured and moved into SQLServer metadata database LTERMETA. Data moved into SQLServer database FSDBDATA.